As awesomebilly has not updated the fantastic addon Luminary Trade Sales History (
http://www.esoui.com/downloads/fileinfo.php?id=247) in quite some time, and patch 1.2.3 broke it bad, I have written a successor. Today, Shopkeeper 0.1 has been released, and is available at
http://www.esoui.com/downloads/fileinfo.php?id=616 - due to item link format changes in patch 1.2.3, searching item names is not yet possible, but aside from that Shopkeeper implements many of LTSH's features, such as text/sound alerts of sales, searchable/sortable sales history tables, and a separate view for only your sales.
If you use the guild stores heavily, give it a look. And since it's my first addon and that addon's first release, report bugs as it probably has one or two
